77995 has 8 divisors (see below), whose sum is σ = 98640. Its totient is φ = 59040.

The previous prime is 77983. The next prime is 77999. The reversal of 77995 is 59977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77995 - 2⁷ = 77867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316 + ... + 505.

It is an arithmetic number, because the mean of its divisors is an integer number (12330).

2⁷⁷⁹⁹⁵ is an apocalyptic number.

77995 is a deficient number, since it is larger than the sum of its proper divisors (20645).

77995 is a wasteful number, since it uses less digits than its factorization.

77995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its digits is 19845, while the sum is 37.

The square root of 77995 is about 279.2758492960. The cubic root of 77995 is about 42.7256738362.

The spelling of 77995 in words is "seventy-seven thousand, nine hundred ninety-five".